Wheel-truing device



Oct- 20, 1925. 1,5 8,402

' W. A. SEAMAN WHEEL TRUING DEVI GE Filed July 6, 1922 gwmmtoz "(/1 EEAMAN Patented st. 20, 1925.

UNITED STATES WILLIAM A. SEAMAN, O-F MIDLAND, MICHIGAN.

WHEEL-TRUING DEVICE.

Application filed July 6,

To all whom it may concern.

Be it known that I, WVILLIAM A. SEAMAN, a citizen of the United States, residing at Midland, in the county of Midland and State of Michigan, have invented certain new and useful Improvements in Wheel- Truing Devices, of which the following is a specification.

My invention relates to improvements in wheel truers or dressers, particularly wheels made of carborundum and other composition wheels, while not restricted to this use.

An object of my invention is to provide a wheel dresser that will dress and true wheels, with less trouble and more accurately than such dressers that have been heretofore used.

A further object of my invention is to provide a wheel dresser wherein the cutting teeth may all be made integral with the wheel used in my invention.

A still further object of my invention is to provide a wheel dresser, that is strong, durable simple and inexpensive in construction whereby the number of working parts are reduced to a minimum.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of the specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a longitudinal section, showing the interior of my invention, and

Figure 2 is a fragmentary perspective detail of the dressing wheel used with my invention.

In the drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a rotatable wheel in which parallel grooves 6 are formed either by milling, grinding or any other suitable method. The parallel grooves 6 extend around the periphcry of the rotatable wheel 5. The wheel is further provided with diagonal grooves 7 extending transversely through the periphery, thereby forming teeth 8 on the periphcry.

I The wheel 5 is mounted on a two piece barrel composed of sections 9 and 10, provided with flanges 11 and 12 respectively. Two ball bearing sets 13 and 14 are mounted within the barrel sections 9 and 10, said bearing sets being mounted on and adapted to rot t around stationary sha o axle 1922. Serial No. 573,129.

15. This axle 15 is held rigid to a shell housing 16 by means of a thread and lock nut 17 on one end only as is clearly shown in Fig. 1 of the drawings. The opposite end of said axle 15 is adapted to float in a fixed hearing 18 which is held rigid to the shell casing 16, by means of a lock nut 19. The shell casing is adapted to receive a support or handle 20 to hold the wheels 5 in contact with the surface to be dressed.

The operation of the device is as follows:

The rotatable wheel 5 is brought in contact with the surface to be dressed and the rotation of said surface will cause the dress ing wheel 5 to rotate in the opposite direction. The action of the dressing wheel 5 on the abrasive wheel to be dressed is a sharp blow. caused by the transverse slots or grooves 7 in the wheel 5, that is there is a slip between the two wheels when travelling at a high rate of speed, and this so called slip produces a dressing away of the glazing and a truing of the diameter of the grinding wheel. The cutter wheel is preferably milled from a single piece of material so as to give additional strength to the teeth, and also to provide fewer parts. I have found that by having the device locked on one side only as is shown in the drawings, that there is less danger for the working parts to become loose, and time is saved when it is desired to change the cutting wheel.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred embodiment of the same, and. that various changes in the shape, size and arrangement of parts, may be resorted to without departing from the spirit of my invention or the scope of the subjoined claim.

Having thus described what I claim. is:

A dressing and truing device comprising a shell housing, a truing wheel provided with an axial bore arranged in the housing, a sectional barrel fitted in the bore provided with end flanges engaging the outer sides of the truing wheel, a fixed axle in the shell housing, means securing one end of the axle to the'shell, a removable support for the other end of the axle, and bearing races supporting the sectional barrel with antifriction means engaging the axle and the removable support respectively.

In testimony whereof I afiix my si nature.

WILLIAM A. SEA AN.

my invention til 

